redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid

runny nose

severe stomach pain

shortness of breath

tender, swollen glands in the neck

tightness in the chest

trouble in swallowing

unpleasant breath odor

voice changes

vomiting of blood or material that looks like coffee grounds

wheezing

yellow eyes or skin

Incidence not known

Agitation

back or leg pains

bleeding gums

blood in the urine or stools

chest pain

convulsions

decreased urine output

fluid-filled skin blisters

general body swelling

general feeling of tiredness or weakness

high fever

hostility

increased thirst

irritability

lethargy

light-colored stools

lower back or side pain

muscle twitching

nosebleeds

pinpoint red pots on the skin

rapid weight gain

sensitivity to the sun

skin thinness

sores, ulcers, or white spots on the lips or in the mouth

stupor

swelling of the face, ankles, or hands

unusual bleeding or bruising

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Indigestion

passing of gas

Less common

Acid or sour stomach

belching

excess air or gas in the stomach or intestines

full feeling

pain

sleeplessness

sneezing

stuffy nose

trouble sleeping

unable to sleep

Rare

Decreased interest in sexual intercourse

dizziness or lightheadedness

excessive muscle tone

feeling of constant movement of self or surroundings

flushing or redness of the skin

headache, severe and throbbing

hives or welts

inability to have or keep an erection

loss in sexual ability, desire, drive, or performance

mood or mental changes

muscle stiffness

muscle tension or tightness

sensation of spinning

skin rash, encrusted, scaly, and oozing

sleepiness or unusual drowsiness

unusually warm skin

walking in unusual manner

weight loss

Incidence not known

Increased sensitivity of the skin to sunlight

severe sunburn

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.